D600 with 700 shutter clicks no dust until I notice two spots. One right in the center and the other directly to the left as I'm looking through the view finder. Both spots are within the area where the 39 AF points would show up. Showed up on my 700th shutter click. Not bad I said to myself considering the other two D600s only made it less than 400 shutter clicks.
Anyway, I start reading the thread "Zen and the Art of Digital Sensor Maintenance" in preparation of my first real cleaning. Most of my cleaning have just been using my large rocket blower and wiping contact points. I even bought a Loupe, sensor brushes, the whole bit...almost $300.00 worth of cleaning stuff from B&H. I looked through the loupe and saw nothing. The sensor was clean. I check the mirror and it's also clean.
So I upload my photos onto my computer and those dot spots are no where to be seen...BUT I still see them through the view finder. I wipe down the view finder, clean all my lens, and just to be safe I even did a dry cleaning of the sensor. Anyone else have this situation? Where are the two spots coming from? Also the spots are there even with the camera off and I'm looking through the viewfinder. Am I thinking this too much? Help
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#1. "RE: Spots/dust ghost??" | In response to Reply # 0WildIsle Nikonian since 06th Jan 2010Wed 30-Jan-13 02:54 AM
Yes you are thinking this through too hard - they're not on the sensor!
They are on the mirror or prism and will not show up in any image as they aren't in the light path to the sensor. Blow them off the mirror or prism screen with a rocket blower or light brush or ignore them as they don't really matter (other than theoretically they could eventually migrate to the sensor.
Bottomline is - if a speck doesn't appear on an actual image file then it's not a problem
#3. "RE: Spots/dust ghost??" | In response to Reply # 2WildIsle Nikonian since 06th Jan 2010Wed 30-Jan-13 03:47 AM
No problem - I hope it's sounds advice!
the pentaprism is the roof of the mirror box so look up above the mirror.
There's a chance it's right on the viewfinder too so look at the outer surface of the VF to double-check.
But ultimately if it's not on the sensor then it's not a problem and fussing with blowers and open lens mounts etc.. is just as likely to introduce dust as remove it. Sometimes less is more - cleaning that is!